package as;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.sql.SQLException;
import javax.servlet.ServletException;
import java.sql.SQLException;
import java.sql.Statement;
import java.sql.Connection;
import java.sql.DriverManager;
/**
 * Servlet implementation class Main3Serv
 */
@WebServlet("/Main3Serv")
public class Main3Serv extends HttpServlet {
	private static final long serialVersionUID = 1L;

    /**
     * @see HttpServlet#HttpServlet()
     */
    public Main3Serv() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		String productid = request.getParameter("productId");
		String productname = request.getParameter("productName");

		Connection conn = null;
		String url = "jdbc:mysql://localhost:3306/mysql";
		String user = "root";
		String password = "85428133";

		try {
			Class.forName("com.mysql.jdbc.Driver").newInstance();
			conn = DriverManager.getConnection(url, user, password);
			Statement stmt = conn.createStatement();
			String sql="update product SET productName='"+productname+"' where productId='"+productid+"'";
			stmt.executeUpdate(sql);
			stmt.close();
			conn.close();
		} catch (ClassNotFoundException e) {
			System.out.println("Class not found");
		} catch (SQLException e) {
			System.out.println("Sql exception");
		} catch (Exception e) {
			System.out.println("exception");
		} finally {
			try {
				if (conn != null) {
					conn.close();
				}
			} catch (SQLException e) {
				response.getWriter().println(e.getMessage());
			}
		}
		response.sendRedirect("jsp/updatefinish.jsp");

	}

}
